J. Tim Dvonch, Ph.D.

Professional Summary

Dr. Tim Dvonch is Associate Professor of Environmental Health Sciences at the University
of Michigan School of Public Health. He holds a B.S. in Chemistry, as well as M.S.
and Ph.D. degrees in Environmental Health Sciences from the University of Michigan,
where he also completed a postdoctoral fellowship in Environmental Science, Engineering,
and Technology. Dr. Dvonch’s research includes exposure assessment and health effects
of air pollution, with a focus on chemical composition of particulates and source
identification, as well as atmospheric transport and fate of toxicants including mercury
and other metals across a wide array of environmental systems with the ultimate goal
of informing policy and decision-marking processes.

Education

Research Interests & Projects

Dr. Dvonch's research interests and experience broadly reside in the exposure assessment,
source identification, and health effects of air pollutants. For exposure assessment,
his specific interests are in the laboratory development and 'real-world' field-evaluation
of methodologies and techniques for improved exposure assessment to air pollutants.
These primarily include the mass, number, and chemical composition of ambient particles
for exposure assessment at the community, micro-environmental, and personal level.
His interests in the application of these methods include source identification and
apportionment of the pollutants through the use of receptor models. Further, Dr. Dvonch
collaborates on several studies looking at the health effects of well-characterized
exposures, both through controlled pollutant exposure studies (animals and humans)
as well as population-based epidemiological investigations, using biological risk
markers and outcomes including but not limited to respiratory and cardiovascular disease.

Air Pollutant Exposure Assessment and Source Identification

Investigation of the mass, number and chemical composition of ambient particles for
exposure assessment at the community, micro-environmental and personal level. Subsequent
application of these data and methods for source identification and apportionment
of the pollutants through the use of receptor models.

Health Effects of Exposure to Air Pollutants

Investigations of the health effects of well-characterized exposures, both through
controlled pollutant exposure studies (animals and humans) as well as population-based
epidemiological investigations, using biological risk markers and outcomes including
but not limited to respiratory and cardiovascular disease.

Atmospheric Sources, Transport, and Fate of Mercury in the Environment

Studies investigating the emission sources of mercury to the atmosphere, as well as
the subsequent atmospheric transport and deposition to sensitive ecosystems, with
particular attention to measurement methods development specific to mercury.

Sherman, L.S., J.D. Blum, J.T. Dvonch, L.E. Gratz and M.S. Landis (2015). The use
of Pb, Sr, and Hg isotopes in Great Lakes precipitation as a tool for pollution source
attribution. Science of the Total Environment, 502:362-74 [doi:10.1016/j.scitotenv.2014.09.034].